what you do is the most important .important（you放在后面）放在前面怎么说那，也就是......that you do刚才那个句子也没有错，按照你的要求也可以这样：What is most important for you to do.我晕，好吧，我直接问你吧，what the most important is that you do。还是what is the most important is that you do对肯定是后面咯可不可以说一下具体原因哈{what is the most important}[ is]{that you do}↓↓ ↓What引导的主语从句整个句子的谓语 作表语从句中：主语是what 谓语是系动词is 表语是the most important 整体是的句子类型是：主系表。 主语从句中的句子类型也是：主系